Devices and methods for tissue severing and removal
First Claim
1. A tissue severing device, comprising:
- a guide comprising two co-linear, co-extensive guide lumens longitudinally extending from a proximal region to a distal terminus along a guide axis, wherein the guide lumens have co-extensive distal segments terminating in distal tips and deformable regions immediately proximal to the distal segments, said deformable regions facilitate in changing the direction of the distal segments with respect to the guide axis;
a cutting tool contained within the guide and capable of forming a cutting loop extending from the distal tips of the two guide lumens, said cutting loop having a loop extension axis defined by the direction in which the cutting loop extends;
an extension means for controlling the degree to which the cutting loop extends from the guide; and
a distal segment positioning means for varying the direction of each distal segment with respect to the guide axis to thereby adjust the angle between the loop extension axis and the guide axis and selectively position the cutting loop with respect to the guide axis.
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Accused Products
Abstract
The present invention relates to devices and methods that enhance the accuracy of lesion excision, through severing, capturing and removal of a lesion within soft tissue. Furthermore, the present invention relates to devices and methods for the excision of breast tissue based on the internal anatomy of the breast gland. A tissue severing device generally comprises a guide having at least one lumen and a cutting tool contained within the lumen. The cutting tool is capable of extending from the lumen and forming an adjustable cutting loop. The cutting loop may be widened or narrowed and the angle between the loop extension axis and the guide axis may be varied. Optional tissue marker and tissue collector may additionally be provided. A method for excising a mass of tissue from a patient is also provided. The device and method are particularly useful for excising a lesion from a human breast, e.g., through the excision and removal of a part of a breast lobe, an entire breast lobe or a breast lobe plus surrounding adjacent tissue.
187 Citations
64 Claims
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1. A tissue severing device, comprising:
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a guide comprising two co-linear, co-extensive guide lumens longitudinally extending from a proximal region to a distal terminus along a guide axis, wherein the guide lumens have co-extensive distal segments terminating in distal tips and deformable regions immediately proximal to the distal segments, said deformable regions facilitate in changing the direction of the distal segments with respect to the guide axis;
a cutting tool contained within the guide and capable of forming a cutting loop extending from the distal tips of the two guide lumens, said cutting loop having a loop extension axis defined by the direction in which the cutting loop extends;
an extension means for controlling the degree to which the cutting loop extends from the guide; and
a distal segment positioning means for varying the direction of each distal segment with respect to the guide axis to thereby adjust the angle between the loop extension axis and the guide axis and selectively position the cutting loop with respect to the guide axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64)
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Specification